We have had users that could run the editor without having a separate graphics card. We made the editor setting scale-able so it can be ran on a variety of machines. However, getting it past the graphics error may be tricky. First off, make sure that your drivers are up to date.
See if you can get the Debugging logs. Look towards the bottom of this link to find directions on how to get them. Post them here. If the Debugging logs can’t be generated, upload the most recent standard log from that folder location.